public void renameEntity(String entityName, String newEntityName) {
   NamedNodeTemplate template = nodeTemplates.remove(entityName);
   if (template != null) {
     template.rename(newEntityName);
     nodeTemplates.put(newEntityName, template);
   }
   NamedNodeType nodeType = nodeTypes.remove(entityName);
   if (nodeType != null) {
     nodeType.rename(newEntityName);
     nodeTypes.put(newEntityName, nodeType);
   }
   NamedStruct struct = structTypes.remove(entityName);
   if (struct != null) {
     struct.rename(newEntityName);
     structTypes.put(newEntityName, struct);
   }
 }